These points are also on the negative side of the x axis, at -pi/4 and -pi/2. When we move along the x axis, notice what happens to the y value. On the left side of zero, tangent is negative. At x=-pi/4, tangent=-1.
The Independent Online. David Cameron may have called a referendum on the EU to blackmail Europe, according to Vladimir Putin. The Russian president also questioned Mr Cameronâs decision to call the vote, as it has caused a âgreat problemâ.
Some experts believe Prime Minister Vladimir Putin remains Russia's real leader. Medvedev, Putin's hand-picked successor, proposed the changes in November, starting with the next president. The new law extends the term of the president from four years to six. Medvedev also signed a law extending the term of members of the lower house of parliament, the Duma, from four years to five. Putin stepped down as president in May after two terms and is now prime minister.